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GLOSSARY 



Pedicellate, Pediceled. Furnished with a 



pedicel. 

 Peduncle. A flower-stalk, whether of a 



single flower or of a flower-cluster. 

 Peduncled, Pedunculate. Furnished with a 



peduncle. 

 Peltate. Shield-shaped; applied to a leaf, 



whatever its shape, when the petiole 



arises from the under surface. 

 Pendent. Hanging. 



Pendulous. Somewhat hanging or droop- 

 ing. 



Penicillate. Tipped with a tuft of fine hairs. 

 Penta-, in compounds, means five. 

 Perennial. Lasting from year to year. 

 Perfect (flower). Having both stamens and 



pistils. 

 Perfoliate. Applied to a leaf through whose 



base the stem appears to pass. 

 Perianth. The floral envelopes of the 



flower, especially when calyx and corolla 



cannot be distinguished. 

 Pericarp. The wall of the ripened ovary, 



which in many cases is the wall of the 



fruit. 



Perigynium. The inflated sac which in- 

 closes the ovary in Carex. 

 Perigynous (flower). Sepals, petals, and 



stamens arising from the rim of a tube 



or cup surrounding the pistil or pistils. 

 Persistent. Remaining beyond the period 



when such parts commonly fall. 

 Personate. Masked; a bilabiate corolla with 



a projection (palate) in the throat, as of 



the snapdragon. 



Petal. A constituent member of the corolla. 

 Petaloid. Petal-like; resembling or colored 



like petals. 



Petiole. The leaf-stalk. 

 Petioled. Petiolate. Furnished with a 



petiole. 

 Petiolulate. Applied to a leaflet which has 



its own stalk (petiolule). 

 Pilose. Hairy; clothed with soft slender 



hairs. 

 Pinnate (leaf). Leaflets disposed along the 



main axis of the leaf; feather-veined 



(secondary veins arising from a midrib). 

 Pinnately lobed, cleft, parted, divided, etc. 



The varying depths of division of a pin- 

 nate (feather-veined) leaf. 

 Pinnatifid. Same as pinnately cleft. 

 Pinnule. A secondary pinna; one of the 



pinnately disposed divisions of a pinna. 

 Pistil. The seed-bearing organ of the flower. 

 Pitted. Having small depressions or pits 



on the surface, as many seeds. 

 Placenta. The surface of the ovary to 



which the ovules are attached. 

 Plicate. Folded into plaits, usually length- 

 wise. 

 Plumose. Feathery; when any slender 



body (such as a bristle of a pappus) is 



beset with hairs, like the beard on a 



feather. 

 Pluri-, in compounds, means many or 



several. 

 Pod. Specially a legume; also applied to 



any sort of capsule. 

 Poly-, in compounds, means many. 

 Polygamous. Having some perfect and 



some staminate and pistillate flowers, on 



the same or on different individuals. 

 Polymorphous. Of several forms. 

 Polypetalous. With the petals distinct 



(whether few or many). 

 Polysepalous. When the sepals are distinct. 

 Pome. A fleshy fruit, such as the apple, 



pear, haw, etc. 

 Posterior. On the side towards the axis; 



see anterior. 

 Prickles. Sharp elevations of the bark, and 



coming off with it, as of the rose. 

 Procumbent. Trailing on the ground. 

 Produced. Extended or projecting, as the 



upper sepal of a larkspur is produced 



above into a spur. 

 Proliferous. A new branch arising from 



an older one, or one head or cluster of 



flowers from another. 

 Prostrate. Lying flat on the ground. 

 Pruinose, Pruinate. Frosted; covered with 



a powder like hoar-frost. 

 Puberulent. Covered with fine and short, 



almost imperceptible down. 

 Pubescence. Fine and soft hairs. 

 Pubescent. With pubescence. 

 Pulverulent. Dusted; covered apparently 



with fine powder. 

 Pulvinate. Cushioned, or shaped like a 



cushion. 

 Punctate. Dotted, either with minute holes 



or apparently so. 

 Pungent. Very hard and sharp-pointed; 



prickly-pointed. 



Raceme. A flower-cluster with one-flowered 

 pedicels along the axis of inflorescence. 



Racemose. Bearing racemes, or raceme-like. 



Rachis. An axis bearing close-set organs; 

 especially the axis of a spike. 



Radiate, Radiant. Furnished with ray- 

 flowers. 



Radical. Belonging to the root, or ap- 

 parently coming from the root. 



Rameal. Belonging to a branch. 



Ray. The marginal flower of a head or 

 cluster when different from the rest, es- 

 pecially when ligulate; the branch of an 

 umbel. 



Receptacle. The more or less expanded or 

 produced end of an axis which bears the 

 organs of a flower or the collected flowers 

 of a head. 



Reclined. Turned or curved downwards; 

 nearly recumbent. 



